Cross-wrapping machine.



O. E. HECKMAN.

ROSS WRAPPING MACHINE.

APPLICATION FILED III/III. I. 1916.

Patented Feb. 13, 1917,

2 SHEETS-SHEET I.

0. E. HECKMAN.

CROSS WHAPPING MACHINE. APPLICATION FILED IIIAII. 7. I9I6.

Lemme,

Patented Feb. 13, 1917.

2 SHEETS-SHEET 2.

@Hgo/m1 ma ORA E. BECKMAN, OF AKRON, OHIIO.

CROSS-WRAPPING EVIACHNE.

Specification. of Letters Patent.

Patenten net. is, tera.

implication filed March 7, 1916. Serial No. 32,640.

To all whom t may concern:

Be it known that ll, ORA E. HECKMAN, a citizen of the United States,residing at Akron, in the County of Summit and State of Ohio, haveinvented a new and useful Cross-lVrapping Machine, of which thefollowing is a specication.

My invention relates to improvements in cross wvrapping machines and hasmore especial reference to a machine of this character designed to crosswrap the inner tubes of pneumatic tires.

rlhe object of the present invention is to provide a machine designed tocross wrap the inner tubes of pneumatic tires.

A further object is to provide simple and efficient means for moving thetape carrying spool back and forth, spirally wrapping and cross wrappingthe convolutions of tape therefrom.

A further object is to provide means whereby a strip of tape is heldtaut during the time it is unwound from the spool and wound upon thetube.

A still further object is the provision of means for changing theposition of the tape carrying spool as the movement of the car- .iriage, upon which said spool is mounted, is

reversed.

A still further object is the provision of means whereby the carriagemay be moved backward or forward as desired with relation to the mandrelupon which the tube is carried, irrespective of the screw threaded shaftwhich operates the carriage.

A further object is the provision of a device which is adapted to wrapeach convolution of the tape a half of a lap over the precedingconvolution thus producing a smooth tube.

With these objects in view the invention consists in the novelconstruction and arrangement of parts, hereinafter described,illustrated in the accompanying drawings, and particularly pointed outin the appended claims, it being understood that various changes in theform, proportions, size and minor details of construction may be madewithin the scope of the appended claims without departing from thespirit or sacrilcing any of the advantages of the invention.

ln the drawings:

Figure 1 is a side elevation of the cross wrapping machine constructedin accord ance with my invention.

Fig. 2 is a top plan view of the same. f

Fig. 3 is a fragmentary elevation on an enlarged scale of a'portion ofthe mandrel and the carriage upon which the tape spool is carried.

Fig. 4 is a vertical transverse sectional view through the machine.

Fig. 5 is an enlarged sectional view showing the means for operativelyconnecting the carriage with the screw threaded shaft.

Fig. 6 is an enlarged detail view showing the means of connecting one ofthe spindles upon the carriage with the tape spool.

Fig. 7 isla detail sectional view of the means for slidably operatingthe shaft in the tail stock.

Similar numerals of reference indicate corresponding parts throughoutthe several figures of the drawings.

Referring more especially to the construe tion illustrated in theaccompanying drawings the numerals 1-1 indicate end frames upon whichthe bed 2 of the machine is mounted, said bed being composed of thespaced channel irons as best illustrated in Fig. 4. At one extremity ofthe bed of the machine, a head stock is provided, said head stockcomprising the brackets 3 upon which suitable bearings 4 are provided, ashaft 5 being journaled within said bearings and carrying a drive pulley6. A conical cup 7 is provided upon the inner extremity of the shaft 5.

tail stock 8 is provided in the opposite extremity of the bed and may bemounted for longitudinal adjustment upon said bed in any suitable andwell known manner. Brackets 9 are formed upon the tail stock, each ofsaid brackets being provided with a bearing 10 within which is rotatablyand slidably mounted a shaft 11. A cone 12 is carried upon the innerextremity of the shaft 11. A fixed collar 13 is provided upon the shaft11 intermediate the bearings 10 and said vcollar is provided with agroove within which is rotatably mounted a ring 14, said ring beingprovided with diametrically opposite pins l5. A lever 16 is pivotallyconnected at 17 to an arm 18 formed upon the tail stock 8, said leverbeing provided with a yoke portion 19 having suitable aper tures whichreceive the pins 15. A spring 2O is interposed between the outer bearing10 and the collar 13 tending to normally hold saidl collar against saidinner bearing. A hollow mandrel 21, adapted to receive the tube to becross wrapped, isplaced in position upon the machine, the cone 12entering one extremity of said hollow'mandrel while the other extremityof said mandrel is located in the conical cup member 7, the

`spring forcing the cone 12 firmly into the'.

extremity voi" the mandrel thus holding the mandrel tightly between saidcone and said cup member and causing the same to be rotated with therotation of the shaft 5.

A screw threaded shaft 22 is journaled in suitable bearings 23 mountedupon the side frames 1, said shaft being preferably provided with theleft and right screw threads 24 communicating at each extremity of theshaft and `forming a diamond screw thread although the ordinary wormscrew may be provided upon sa'id shaft if desired. The sprocket wheel 25is provided upon one extremity oof the shaft 22 and is connected bymeans of a chain '26 to a sprocket wheel 27 mounted upon theshaft 5.

A rod 28 is carried 'between the end frames 1 and spaced from the screwfthreaded shaft 22. Slidably mounted upon mounted upon the carriage 29,above the the rod 28 is a carriage 29 preferably of channel shape. Acylindrical casing 30 is screw threaded shaft 22 and slidably mountedwithin. said casing is a rod 31, the

lower extremity of which is adapted to engage the screw threads 24 uponthe shaft 22. A collar 32 is fixed upon the rod 31 and l adapted tonormally engage the upper wall of the carriage 29, a spring 33 beingprovided betweenv said collar and the upper wall of the'casing 3() forthe purpose of normally holding the extremity of the rod-1h31 in en-Agagement with the screw threads 24.

Al projection 34 is provided upon the upper wall of the casing and the/rod 31 is provided with a stud adapted to normally rest upon the topwall of the casing r30 as shown in Fig. 5, but when it is desired tomove the rod out of engagement with the screw threads 24 in order toslide the carriage lndependently ofthe screw threaded shaft 22, thehandle 36 upon the rod 31 is grasped and the Jrod is raised to a height'bringing the stud 35 above the level of the 'projection 34 upon thecasing, the rod then eing given a half turn allowing the stud 35 to restupon the projection 34 thusholding the extremity o the rod out ofengagement with the screw threads upon the shaft 22.

The carriage 29 is provided with the arm 37 and pivotally mounted uponsaid arm is the frame 38 which carriestthe tape spool, said frame beingprovided with the yoke portion 39, which is pivotally .connected to thearm 37 bymeans of a bolt 40 or the like.

The frame 38 is of substantially U-shape,

the roller 41 connecting the extremities of said frame. The tape spoolis carried upon i the spindles 42 and 43, said spindle 42 being providedwith a pyramidal extremity 44.,

The spindle 42 is journaled in the bearing 45, saidbearing beingprovided in one side of the frame 38 and a tension wheel 46 is providedupon the outer extremity of said spindle, a brake band 47 beingconnected at one extremity to the frame 38, an adjusting screw 48 beingprovided` for adjusting the` tension upon said brake band. r1`he freeextremity of the brake band is connected to vwhich is provided upon theslidable spindle43, a spring 58 tending to normally urge the levertoward the frame 38 thus holding the spindle 43 in. engagement with thetape spool. rIhe spool 59 containsfa roll of tape 60 of the ordinaryform used for cross wrapping inner tubes. For the purpose of feeding thetape to the mandrel at the proper angle a curved tension board 61 isprovided 'upon the bed of the: machine in the path of the tape from thecarriage to the man-` In operating the device to cross wrap a tube themandrel 21 is placed in-y position upon the cone 12 and within the cup 7'as shown` in the drawings and the pulley 6 operated in any convenientand well known manner.` The rod 31 upon the carriage will be placed inthe position best shown in Fig.

'5, bringing the extremity thereof into engagement with the screwthreads 24 upon the shaft 22 and as said shaft is rotated the carriagewill be moved parallel to the mandrel'21, automatically reversing itsVmotion asit comes to each extremity of the mandrel, the `frame withinwhichv the tape Spool is carried automatically swinging upon its pivotalpoint as .the direction of the carria e .-.is reversed. The screwthreads 24 upon t e shaft 22 are of the proper pitch to cause the eachrevolution of the tube.

Although the drawings and above specication disclose the best mode inwhich I have contemplated embodying'my invention I desire to be notlimited to the details of such disclosure, for in the further practicalapplication of my invention, many changes in form and construction maybe made, as circumstances require or experience sug- 13u tape to make ahalf lap upon the tube with,

gests, without departing from the spirit of a frame, a mandrel rotatablymounted upon the invention, Within the scope of the appended claims.

l claim:

1. In a machine of` the character described,

a frame, a mandrel rotatably supported upon said frame, a carriageslidably mounted, upon said frame, a tape spool carrying frame pivotallymounted upon said car rage, a tape spool mounted Within said tape spoolcarrying frame, a tension device con- Ynect'ed to said tape spool, meansfor rotating said mandrel, a curved tension board located between saidmandrel and said tape spool, the tape from said tape spool arranged topass over said tension board, means for moving said carriage in a pathparallel to said mandrel and means ,for reversing the direction of saidcarriage adjacent each extremity of said mandrel, said tape spoolcarrying frame arranged to be oscillated as the movement of the carriageis reversed. 1

2. In a machine ofthe character described,

said frame, a carriage slidably mounted upon said frame, ,a tape spoolo'arnying frame pivotally mounted upon said carriage, a tape spoolmounted Within said tape spool carrying frame, a tension deviceconnected to said tape spool, means for rotating said mandrel, a tensionroller located in the forward extremity of said tape spool carryingframe, a curved tension board provided upon the frame adjacent saidmandrel, thetape from said tape spool arranged to pass over said tensionboard, means 'for moving said carriage in a path parallel to saidmandrel, and means for reversing the direction of movement of'saidcarriage adjacent each extremity of said mandrel, said tape spoolcarrying frame arranged to be oscillated as the movement ofo thecarriage is reversed. n

In testimony that l claim the above, li have hereunto subscribed myname.

ORA n. HECKMAN.

